7. Why would it be difficult to measure the rate of reaction for the rusting of iron?

For rusting, it is difficult to write an equation due to the complexity of the reaction. Thus, we can express the reaction like the following. According to the law of conservation of mass, the increased mass of nail and rust is the amount of oxygen.

Explanation:

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b. accuracy of the data matters alot more than its number of digits, organization or amount of detail. quantitative observation is more accepted than the qualitative observation.

b) nuclear ive learned that in a pedtrodic table